In an experiment to measure the specific heat capacity,
c, of a material, a body of mass
m is heated electrically using a voltage,
V, and current,
I, for a time,
t. The temperature of the body rises from
T_{1} to
T_{2} (C).
The specific heat capacity of the body is given by the equation:
The experimental values and standard deviation uncertainties were:
T_{2} = 45.6 ±0.1 K | | T_{1} = 40.4 ±0.1 K |
I = 10.6 ±0.02 A | | V = 12.0 ±0.1 V |
t = 120 ±1 s | | m = 0.68 ±0.01 kg |
Calculate the specific heat capacity and its standard deviation uncertainty.